BB was never really an option, what do you think he'll do? I see no reason why he shouldn't ally with Shanks.
Like, Shanks and Mihawk are friends. They're rivals but they're also friends. Shanks told Mihawk about Luffy, and Mihawk travelled to the New World to hunt Shanks down and give him Luffy's first bounty poster (he may even have Shanks Vivre Card).
Shanks crewmates weren't surprised or bothered by Mihawk's presence
Before he decided to attack Luffy, he apologised to Shanks in his mind. When asked to fight Shanks at Marineford, he told the Marines to go fuck themselves.
If Mihawk is going to the New World, there's no reason for him not to drop by on his friend and say hi. Shanks would probably offer Mihawk to become captain an alliance.
Mihawk is kind of a lone wolf, he probably wouldn't be setting up a crew by himself.
Like, Shanks and Mihawk are friends. They're rivals but they're also friends. Shanks told Mihawk about Luffy, and Mihawk travelled to the New World to hunt Shanks down and give him Luffy's first bounty poster (he may even have Shanks Vivre Card).
Shanks crewmates weren't surprised or bothered by Mihawk's presence
Before he decided to attack Luffy, he apologised to Shanks in his mind. When asked to fight Shanks at Marineford, he told the Marines to go fuck themselves.
If Mihawk is going to the New World, there's no reason for him not to drop by on his friend and say hi. Shanks would probably offer Mihawk to become captain an alliance.
Mihawk is kind of a lone wolf, he probably wouldn't be setting up a crew by himself.